This is literally impossible without slowing to single digit speeds for every intersections. At some point you just have to rely on the other traffic honoring signaling and signage or having some desire for self preservation.
The claim was that after braking for 10m, it was still going at 40km/h. It'd take another 6-7m to come to a full stop. If it was a full 18m stopping distance (half the one from 100km/h), that'd mean a bit over 70km/h, so over 60km/h anyway for 16-17m.
I do not know of any country where there are intersections you can go through at 60+ km/h legally.
This does not mean that Waymo in question was going too fast, but something is off in the claim (maybe it did not react on time and really brake for 10m; maybe the collision speed was not a full 40km/h; or maybe it was going too fast...).
The US is dotted with "real highways" (i.e. designed as such, not a former main street that's seen a bunch of upgrades) with 50+mph speed limits and low traffic streets that tee into them with nothing more than a stop. And this isn't some middle america thing that can be dismissed as backwards flyover states. The rich coastal states have them too. Divided medians and T-junction type are fairly common. 2-way stops and cross type junctions less so in my experience but in more rural areas they're more common.
>This does not mean that Waymo in question was going too fast, but something is off in the claim (maybe it did not react on time and really brake for 10m; maybe the collision speed was not a full 40km/h; or maybe it was going too fast...).
Seems like someone pulled out from a residential road onto a main road with no f's to give and the waymo went around and OP is messing up the numbers a little. No matter how fast you're going it always feels faster from the passenger seat.
In most of Europe at least (I did not drive enough in States to remember), non-highway intercity roads have a speed limit of around 50-55mph, but where there is any merge or crossing, this is reduced to 30-35mph.
I based my estimate on the Waymo going slower than other cars and the city speed limit in Toronto being 50 km/h, and I took a stab at the numbers. I think it was Beverly Blvd which the internet says has a speed limit of 35 mph = 56 kph at the time?
I was in the back seat so I couldn't judge the distance that well. I passed the other car in a second so I guessed that's how much ground I covered.
Human drivers correct each others' mistakes every single day, and we don't hear about them because... well, nothing has happened. The argument could be made that Waymos will make fewer mistakes, so fewer evasive maneuvers will be needed, but it's great to hear that Waymo's performance is coming closer to bringing good human driver capability with faster reaction time enabled by tech.
I appreciate you converting to SI units, but I am ok with you keeping them as-is too: either side can do the conversion to whatever they need, and HN is very much a mixed audience.
